COLOR FASTNESS TO WATER PROBLEM
Color fastness to water determines the resistance of garments colors to immersion in water.
This test used to measure the migration of color to another fabric when wet and in close contact. The washing test also typically uses a basic PH solution due to the addition of detergent, while this test is conducted at neutral PH levels.
The poor dye will create more problem of color fastness. sometimes, color dye did not fix with the fabrics. different dyes used for different fibers or fabrics. Water is also parameter for this test. This test conduct neutral pH water. the more acid, the more problem.
It creates the problem of bleeding on garments despites of simple wash. Please use Anti back stain for removing bleeding issues.
The methods of test
ISO 105 E01 and AATCC 107 are the most common standards for testing. The standards are technically equivalent, but the testing methods vary slightly between them.
The way of techniques to reduce color fastness problem.
Select dye for different fibers.
Select good fixing agent depends on different dyeing on garments.
Use Anti back stain in garments wash
Use softener for improving depth of color.